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104220-97-5

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104220-97-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104220-97-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,2,2 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 104220-97:
(8*1)+(7*0)+(6*4)+(5*2)+(4*2)+(3*0)+(2*9)+(1*7)=75
75 % 10 = 5
So 104220-97-5 is a valid CAS Registry Number.

104220-97-5Downstream Products

104220-97-5Relevant articles and documents

A ROUTE TO PROSTAGLANDIN PRECURSORS FROM 1-(PHENYLTHIO)-2-OCTENYLLITHIUM.

Binns, Malcolm R.,Haynes, Richard K.,Lambert, Dale E.,Schober, Paul A.

, p. 3385 - 3388 (2007/10/02)

The enolates generated by the conjugate addition of 1-(phenylthio)-2-octenyllithium to 4-tert-butoxycyclopent-2-en-1-one and γ-crotonolactone react with methyl 7-halohept-5-ynoates in the presence of Ph3SnCl to deliver products which may be converted into prostaglandin precursors.

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